Paper treating machine



Aug. 26, 1941. A. D. ElTZEN PAPER TREATING MACHINE Filed May 1, 1937 3Sheets-Sheet 1 Augist D. Eitml,

IJ INVENTOR.

ATTORNEY.

Aug. 26, 1941. A. D. EITZEN 2,253,511

PAPER TREAT ING MACHINE F iled May 1, 1957 s Sheets-Sheet 2 Aug. 26,1941. A. D. EITZEN 2,253,511

PAPER TREATING MACHINE Filed May 1; 1937 3 Sheets-Sheet 3 Patented Aug.26, 1941 PAPER TREATING MACHINE .August D. Eitzen, Rockville Centre,'N.Y., assignor to News Projection Corporation, New York, N. Y., acorporation of New York Application May 1, 1937, Serial No. 140,196 3Claims. -(Cl. 34-155) This invention relates to a paper treating machineand especially a machine for treating paper, such as glassine or thelike to obtain a maximum efficiency out of the same when used as ainstance as projection machine tape. r

Among the objects of the present invention, is aimed to provide animproved paper treating machine whereby a roll of paper, such asglassine paper of about twenty-four inches in width as an instance isfirst fed to a coating bath and then drawn upwardly through a dryingchamber or tower and again drawn down to a windup reel whereby the speedof the windup reel and supply of the reel are regulated substantially tocorrespond to one another and in which suitable tension is supplied atpredetermined intervals in the path of travel of the tape to maintainthe same smooth and free from wrinkles throughout and effect a tightwindup on the windup reel.

Still another object of the present invention is to provide a papertreating machine in which there is provided a tower through which thetape is fed upwardly and while moving upwardly depending upon thecomposition of the coating, height of the tower and speed of travel, adraft of heated air is drawn past the tape while it is travellingthrough the lower part of the tower and a draft of cold air drawn pastthe tape while it is travelling through the other part of the tower witha view effectively to dry and harden the coating being produced on thetape.

These and other features, capabilities and advantages of the inventionwill appear from the subjoined detail description of specificembodiments thereof illustrated in the accompanying drawings in whichFigure 1 is a side elevation of one embodiment of the present invention;

Fig. 2 is a section on the line 2-2 of Fig. 1; Fig. 3 is an enlargedfragmental section of the supply reel, coating bath and entrance to thedrying chamber of the embodiment illustrated in Fig. 1;

Fig. 4 is a section on the line 4-4 of Fig. 3;

Fig. 5 is a transverse section of the rollers engaging the tape after itleaves the bath of another embodiment;

Fig. 6 is an enlarged fragmental section of still another embodimentshowing the path of movement of the tape before being coated and againafter being coated and before being dried; and

Fig. '7 is a section on the line 'I'| of Fig. 6.

In the embodiment shown in Figs. 1 to 4; there is shown a shaft Imounted on standards 2 on which shaft I, there is wound or mounted thesupply roll 3 of paper, such as glassine paper or the like.

The standards 2 preferably of channel iron or the like are connected bysuitable connecting bars 4 also preferably composed of channel iron tothe wall 5 of the lower housing portion 6 which is supported by suitablestandards I extending upwardly to either side of the pan or trough 8, inthe present instance, containing the coating liquid or the like. Thetrough 6 is preferably removably mounted between the standards I, 'I sothat it may be removed for cleaning or the like or for replacement byanother type of coating trough or coating device.

Above the housing portion 6, there is formed an enlarged casing 9 havinga plurality of heating units In for heating theair disposed to eitherside of the path of travel of the tape I3, the lower end of the housing9 having two dampers II and I2 that are provided to adjust the size ofthe entrance for the tape I3.

The upper end of the enlarged casing 9 is rovided with an extended flathousing or tower I4 composed of two opposing walls I5 about thirtyinches in width and in the present instance spaced about three inchesfrom one another to form a passage for the tape I3.

At the top of the tower I4, there is formed a roller I6 drivinglyconnected to the motor I! mounted on the platform It extending from theupper end of the tower I4. roller I6, the tape I3 passes out of thetower I4 and over the roller I9 formed at the upper end of the arm 20extending upwardly from one side of the tower I4 so that the tape willmerely effect about a forty-five degree wrap around theroller I6.Preferably thespeed of the roller I6 is so regulated that'it will befaster than the feed of the tape so that it will slip relative to thesame and thereby iron out the wrinkles and center the tape. From theroller I9, the tape then passes down to the'roller 2I journaled in theframe 22 and drivingly connected with the motor 23 to rotate in thereverse direction to the direction of travel of the tape whereby thetape will be further smoothed out and centered and tension imparted toit so that the tape will ultimately be t ghtly wrapped on the windupreel 24.

Before passing to the wind-up reel 24, the tape I3 passes up over theidler 25, then down under the idler 26 and then up over the idler 21before passing to the windup reel 24. The windup reel 24 is mounted onthe shaft 28 journaled in the frame 22 on which shaft there is mountedthe After leaving the pulley 23 which is drivingly connected to themotor 38.

The tape I3 is subjected both to a heating and cooling effect whilepassing through the tower l4. The height of the tower l4, the speed oftravel of the tape and the composition of the coating will determine thetemperatures of the air drawn through the tower l4 and the location ofthe manifold 3| which divides the cold stream from the heated'stream ofair. The reservoir 3| is connected by the conduit 32 with the suctionfan'33 connected to the motor 34. The fan housing 35 in the presentinstance is connected to a suitable partition 38 or the like.

In the present instance, the manifold 3| is dis- 115 posed abouttwo-thirds the distance up the tower |4 so that the fan through themanifold 3| will draw heated air so heated by the heating units l8 upthrough two-thirds the length of the tower l4 and cold air from the openend of the tower |4 through one-third of the length of the tower H inwhich case during the first two-thirds distance of the travel of thetape l3 through the tower I4, it will be subjected to a stream of heatedair and for the remaining one-third distance of the travel of the tape|3 through the tower I4, it will'be subjected to a cold stream of air.

For controlling the streams of hot and cold air in the tower l4, thereare provided the dampers 31,and 38 for the cold air and the dampers 39and 48 for the;heated air. Preferably so that the temperaturein thetower |4 below the manifold 3| may be taken for the purpose ofregulating, the tower I4 is provided with a thermometer 4| extendingtherefrom as indicated.

When the coating mixture consists of as an instance copai, alcohol, andcastol oil, for a predetermined speed of travel of the tape and heightof tower M at least ten feet, the temperature maintained below themanifold 3| is preferably about one hundred and forty degreesFahrenheit.

It is of course obvious that the greater the height of the tower l4 witha given temperature and given consistency in composition of coatingmaterial, the faster the tape may be advanced through the tower |4 whena predetermined degree of dryness and hardness of the coating isdesired.

The mechanism now to be described is mainly concerned with regulatingthe speed of the supply roll 3 irrespective of its decreasing diameterand the increasing diameter of the windup reel 24. As an instance, afterleaving the supply roll 3, the tape f3 first passes under the drivenroller 42 and then over the idler 43 rotatably mounted at the ends ofthe arms 44 pivotally connected to the standards 2. From the idler 43,the tape l3 then passes under the rod 45 formed at the ends of the arms48 pivotally connected to the standards 2 below the arms 44.

Thereupon, the tape I3 passes up over the adjustable roller 41 mountedin the blocks 48, Fig. 4, and then down under the rods 49 and 58,

. preferably disposed at the same level so that the trough 8 with itsbath may be raised to immerse the path of movement of the tape andtherewith the tape under the succeeding rods 43 and 58. From the rod 49,the tape l3 then passes upwardly with one face engaging an edge of thescraping block 5| and then on so that its other face engages a face ofthe scraping block 52. The blocks 5| and 52 are preferably adjustablymounted so that a greater or less loop or bend may be formed in the tapel3 when passing from the bath in the trough 8 up to and into the casing8. according to the thickness of the coating to be formed on the paper.

On the top of the arm 48, there is mounted a mercury switch 53 formingan oblique angle with the arm 48 and to the lower face of the arm 48there is secured a second mercury switch 54 with its tube substantiallyparallel to the length of the arm 48 so that when the arm 48 is raisedinto the upper dash and dot line position both the'switches 53 and 54will be closed and when the arm 48 is lowered into the lower dash anddot line position, both the switches 53 and 54 will be open. The wiringconnecting.

the motor 55 with the switches 53 and 54 is substantially as follows.One main lead 58 is connected direct to the motor 55. The other mainlead 51 is connected to the rheostat 58 which in turn is connected toone of the contacts 58 of the switch 54 by the conductor 88. The othercontact 8| of the switch 54 is connected by the conductor 82 to one ofthecontacts 83 of the switch 53 and the other contact 84 of the switch53 is connected by the conductors 85 and 88 to I the motor 55. Thecontact 8| of the switch 54 is also connected to the resistance 81 whichin turn is connected to the conductor 88 by the conductor 88 so thatwhen the arm 48 is in its uppermost position and both switches areclosed. the resistance will be shunted and the motor 55 operate at topspeed. While when the arm 48 is in the intermediate position and onlythe switch 54 is closed, the resistance will be cut in and the motor 55operated at a lower speed and when the arm 84 is in the closed positionindicated where both switches will be open the motor 55 will be broughtto rest. Since, see Fig. l, the driven roller 42 is drivingly connectedto the motor 55'.

In other words, where the tape I3 is advanced by the surface speed ofthe roller 42, the speed transmitted to the tape will of course beuniform at any given speed irrespective of the diameter of the supplyroll 3.

However, since the shaft 28 of the takeup reel 24 is rotated, the speedtransmitted to the tape as the diameter of the reel increases will ofcourse increase. It will therefore be necessary to compensate for thisincreased speed. For this purpose, the control arm 48 is provided. Itwill be obvious from the foregoing that when the speed transmitted tothe tape by the reel 24 is greater than that transmitted to the tape bythe roller 42 when the resistance 81 is cut out, it will take up theslack formed by the arm 48 and eventually raise the arm so that themercury switch 53 is closed when the resistance 81 will be shunted andthe motor 55 operate at top speed in turn to increase the speed of theroller 42.

Preferably the speed so transmitted to the roller 42 will be greaterthan the fastest speed transmitted to the tape by the reel 24 so thatthe roller 42 will quickly again form a suiiicient loop to permit thearm 48 to drop at least into the full line position shown in Fig. 3.This see-sawing action of the arm 48 ofcourse will not in any waymaterially affect the tension in the tape l3 and the arm 48 will at alltimes take up the slack substantially as quickly as it is being formed.The roller 41 by the mechanism now to be described may be inclined tothe horizontal with either end raised according tothe formation of thetape since it has been found that the average tape mounted upon a rolleris not only not uniform in thickness throughout but actually is inclinedto spiral.

The blocks 48 havebeveled lower ends 89 to cooperate with the beveledslots I in the rod II slidably mounted in the bracket walls I2 and 13.One end I4 of the rod II is threaded to receive the nut 15. The otherend of the rod 'II is provided with a pin 16 between which and the endwall 13, there is compressed a spring IT.

From the foregoing, it will appear that when the nut 15 is screwedinwardly, it-will contract the spring 11 and raise the left handend ofthe rod 41, whereas when the nut 15 is screwed outwardly, the spring I1will cause the rod II to be moved toward the right to raise the righthand end of the rod 41.

In order to prevent the supply roll 3 from unraveling, it is desirableto have the brake 18 provided at the end of the arm 19 pivoted at 80 tothe Wall I -0f the tower I4. This brake 78 resting on the roll 3 willprevent the same from unraveling and incidentally increasing thefrictional resistance as the diameter of the roll decreases.

In the embodimentshown in Fig. 5, instead of the stationary scrapingblocks 5I and 52, there is provided a driven roller 8| preferablydrivingly connected to a motor, such as the motor 55 by means not shown.The tape 82 is pressed into driving engagement with the roller 8| by therubber lined roller 83 rotatably mounted at the end of the arm 84pivotally mounted at 85. The arm 84 is also provided with an extension86 having an adjustably mounted weight 81 to cooperate with the arm 84to exercise the desired pressure on the tape 82 in opposition to throller 8|. In the embodiment shown in Figs. 6 and 7, there are shownmeans for guiding the tape so that only one face thereof may be coated.As an instance, when the tape 88 leaves the adjustable roller 89 similarto the roller 44, it passes under two successive stationary rods 90 and9| and then around the roller 92 and then around a portion of thesurface of the roller 93 which has its lower portion preferably belowits shaft 94 immersed in the bath 95 formed in the trough 9.6.

From the roller 93, the tape 88 then passes around to the roller 91 toguide it or position it for passage upwardly between the dampers 98 and99 at the lower end of the housing I00. It will be noticed that theshaft IOI of the roller 91 is journaled in the plates I02 and I03 whichare slot and pin connected to the side walls I04 and I05 respectivelyand fulcrumed on the shaft 94.

The shaft 94 of the roller 93 preferably as shown is also journaled inthe Walls I04 and I05 so that the plates I02 and I03 may be adjustedrelative to this shaft 94 as a center. The shaft 94, see Fig. 7, ispreferably drivingly connected to the motor I05. The adjustment of theplates I02 and I03 is also provided to regulate the thickness of thecoating to be formed on the paper 88.

In the interest of further regulating the thickness of the coating to beformed on the paper 88, the speed of the roller 93 may also be changedas an instance by th rheostat I01 of the motor I06, the differentialbetween the surface speed of the roller 93 and the advancing speed ofthe tape 88 determining the thickness of coating on the same.

When desired the roller 41 illustrated in Fig. 4 may be anchored againstrotation by the pin I08 connected to the plate I09 extending from thewall 12.

It is obvious that various changes and modifications may be made to thedetails of construction without departing from the general spirit of theinvention as set forth in the appended claims.

I claim:

1. The combination of a tape supply roll, a take up reel, means fordrying a freshly coated tape including a vertically extended dryinghousing, uide rollers adjacent the bottom and top of the housing forguiding the tape substantially along the longitudinal axis of thehousing with the walls of the housing specad from the front and rearfaces of the freshly coated tape, means for actuating said take up reelto pull the tape as it is supplied by said supply roll over said guideroller adjacent the bottom of said housing and then upwardly throughsaid housing, then over the guide roller adjacent the top of saidhousing and then downwardly to said take up reel, means for driving throller at the top of said housing at a greater surface speed than thatimparted to the tape by said take-up reel, a third roller cooperatingwith the roller at the top of said housing and said take-up reel tendingto retard advancement of the tape to smooth out the same and center it,and means for actuating said third roller in the reverse direction tothe direction of movement of the tape, said third roller engaging thetape after leaving said housing and at the level of the lower end ofsaid housing.

2. The combination of a tape supply roll, a take up reel, means fordrying a freshly coated tape including a vertically extended dryinghousing, guide rollers adjacent the bottom and top of the housing forguiding the tape substantially along the longitudinal axis of thehousing with the walls of the housing spaced from the front and rearfaces of the freshly coated tape, means for actuating said take up reelto pull the tape as it is supplied by said supply roll over said guideroller adjacent the bottom of said housing and then upwardly throughsaid housing, then over the guide roller adjacent the top of saidhousing and then downwardly to said take up reel, and means for drivingthe roller at the top of said housing at a greater surface speed thanthat imparted to the tape by said take-up reel for exercising tension onthe tape to smooth out the same and center it and thereby impart asurface speed greater than the advancing speed of the tape adjacent theupper end of said housing.

3. The combination of a tape supply roll, a take up reel, means fordrying a freshly coated tape including a vertically extended dryinghousing, guide rollers adjacent the bottom and top of the housing forguiding the tape substantially along the longitudinal axis of thehousing with the walls of the housing spaced from the front and rearfaces of the freshly coated tape, means for actuating said take up reelto pull the tape as it is supplied by said supply roll over said guideroller adjacent the bottom of said housing and'then upwardly throughsaid housing, then over the guide roller adjacent the top of said.

housing and then downwardly to said take up reel, and means inengagement with the tape for exercising tension on the tape to smoothout the

